Difference between revisions of "Transformation of PGD2 to PGJ2"

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(Parameters)
(Parameters)
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! Reference
 
! Reference
 
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| X
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|3.3E+6
| Y
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|M-1 min-1
| Z
+
|25°C and 0.055 ionic strength
| A
+
|H2CO3 to CO2
| B
+
|<ref name="Gibbons1963”>[http://www.jbc.org/content/238/10/3502.full.pdf B. Gibbons "Rate of Hydration of Carbon Dioxide and Dehydration of Carbonic Acid at 25" J Biol Chem. 1963 Oct;238:3502-7]</ref>
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! Reference
 
! Reference
 
|-
 
|-
|
+
|< 8E-04
|
+
|N/A
|
+
|OH Radicals in the Presence of Added Gas Phase HNO3 (3 ppmv n-pentadecane, 0.25, 0.50, 1.0, or 2.0 ppmv HNO3, 10 ppmv O3, and 2 ppmv TME were added from a glass bulb in a flow of N2)
|
+
|Acid-Catalyzed Dehydration of Cyclic Hemiacetals (n-Pentadecane) in SOA
|
+
[[File:Cyclic Hemiacetals.PNG ‎|center|500px]]
 +
|<ref name="Ranney2016”>[http://pubs.acs.org/doi/pdf/10.1021/acs.jpca.6b01402 A. Ranney "Kinetics of Acid-Catalyzed Dehydration of Cyclic Hemiacetals in Organic Aerosol Particles in Equilibrium with Nitric Acid Vapor"  J. Phys. Chem. A, 2016, 120 (16), pp 2561–2568]</ref>
 +
|-
 +
|4E-04
 +
|N/A
 +
|PH of 100 cc. 0-02N NaHCO3, saturated with C02, into which 0 95 cc.
 +
|H2CO3
 +
|<ref name="BUYTENDYK1927”>[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1251954/pdf/biochemj01144-0128.pdf F. BUYTENDYK "A Study of the System Carbonic Acid, Carbon Dioxide and Water - Determination of the True Dissociation-constant of Carbonic Acid"  Biochem J. 1927; 21(3): 576–584.]</ref>
 +
|-
 +
|4.4E-4
 +
|N/A
 +
|In a 0O008 mol. solution of carbonic acid at 4°, 1-23 % is present as H2CO3
 +
|H2CO3
 +
|<ref name="Thiel1914”>[http://onlinelibrary.wiley.com/doi/10.1002/cber.191404701173/epdf Thiel and Strohecker (1914). Ber. deutsch. chem. Gem. 47, 945, 1061.]</ref>
 
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Revision as of 11:55, 3 April 2017

Return to overview

Due to the lack of PGD2 production by keratinocyte and fibroblast cells, the anti-inflammatory cyclopentanones, PGJ2 and 15d-PGJ2, will not be produced during early experimental procedures either.


Reaction

R8 PGD2 - PGJ2.jpg

Chemical equation

 FA \rightleftharpoons AA

Rate equation

Parameters

Association Rate Constant (Kf)
Value Units Conditions Substrate Reference
3.3E+6 M-1 min-1 25°C and 0.055 ionic strength H2CO3 to CO2 [1]
Dissociation Rate Constant (Kr)
Value Units Conditions Substrate Reference
Dissociation Constant
Value Units Conditions Substrate Reference
< 8E-04 N/A OH Radicals in the Presence of Added Gas Phase HNO3 (3 ppmv n-pentadecane, 0.25, 0.50, 1.0, or 2.0 ppmv HNO3, 10 ppmv O3, and 2 ppmv TME were added from a glass bulb in a flow of N2) Acid-Catalyzed Dehydration of Cyclic Hemiacetals (n-Pentadecane) in SOA
Cyclic Hemiacetals.PNG
[2]
4E-04 N/A PH of 100 cc. 0-02N NaHCO3, saturated with C02, into which 0 95 cc. H2CO3 [3]
4.4E-4 N/A In a 0O008 mol. solution of carbonic acid at 4°, 1-23 % is present as H2CO3 H2CO3 [4]

Related Reactions

  • B. Gibbons "Rate of Hydration of Carbon Dioxide and Dehydration of Carbonic Acid at 25" J Biol Chem. 1963 Oct;238:3502-7
  • A. Ranney "Kinetics of Acid-Catalyzed Dehydration of Cyclic Hemiacetals in Organic Aerosol Particles in Equilibrium with Nitric Acid Vapor" J. Phys. Chem. A, 2016, 120 (16), pp 2561–2568
  • F. BUYTENDYK "A Study of the System Carbonic Acid, Carbon Dioxide and Water - Determination of the True Dissociation-constant of Carbonic Acid" Biochem J. 1927; 21(3): 576–584.
  • Thiel and Strohecker (1914). Ber. deutsch. chem. Gem. 47, 945, 1061.
  • Retrieved from ‘http://www.systemsbiology.ls.manchester.ac.uk/wiki/index.php?title=Transformation_of_PGD2_to_PGJ2&oldid=5226